Developer Profile - Firefox Addon - This Firefox addon will automatically alter your profile into a development environment, as described at the "Setting up an extension development environment" page. Note that the addon thereby actively sets your profile settings for you
PEAR is a framework and distribution system for reusable PHP components and is short for "PHP Extension and Application Repository". It is pronounced just like the fruit.
The code in PEAR is partitioned in "packages"
oerr - Oracle Error Code Lookup - Ever wanted to use the oerr tool elsewhere than just your Unix command prompt? Enter oerr for the browser!
Just enter the 5-digit error code (or other keywords), and this simple yet handy Firefox add-on will search Oracle's 11g online docs for you
Python Programming Specific Search plugin - Search the internet for results relevant to python programming. Because of the way this search works, you may get more results with more specific search terms. The term Python will automatically be included in your query
Bugzilla Tweaks - This Firefox extension modifies the pages loaded from bugzilla.mozilla.org and adds features including:
• Interleaving the bug's change history with the comments on the same page
• Showing the last time that a bug or attachment flag was changed
• Proving user name autocompletion support
• And many more..
Mobile Tools - Tools for working with web pages in Firefox Mobile. Use tools like Page Info to view details about the current web page or use Page Source to view the actual web page source. A Firebug Console API is also supported for helping to debug web pages on mobile devices
Where Am O? A helpful extension for AMO developers.
The only functionality right now is to clearly identify what AMO server you are on and let you switch between that page on others.
Add your own dev server by going to about:config and creating the pref extensions.whereamo
PyGTKEditor is a text editor with a small screen footprint, fast syntax highlight based on GtkSourceView, fullscreen capable, regulars expressions search and many more other things specially designed for onboard developers. PyGTKEditor was mainly an editor for python developer, but it is now open to all other language like c/c++, ruby, java, php and many more